1003 Lilofee

1003 Lilofee
Discovery
Discovered by	K. Reinmuth
Discovery site	Heidelberg Obs.
Discovery date	13 September 1923
Designations
Named after	Lilofee; (mermaid in German folklore)
Alternative designations	1923 OK · 1937 FB; 1940 TA · 1951 QO; 1951 RA2 · 1957 WD2; 1962 QH · A915 HB
Minor planet category	main-belt · (outer); Themis
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	93.81 yr (34,263 days)
Aphelion	3.6414 AU
Perihelion	2.6373 AU
Semi-major axis	3.1394 AU
Eccentricity	0.1599
Orbital period (sidereal)	5.56 yr (2,032 days)
Mean anomaly	211.31°
Mean motion	0° 10m 37.92s / day
Inclination	1.8402°
Longitude of ascending node	139.45°
Argument of perihelion	317.42°
Physical characteristics
Dimensions	27.29±1.83 km; 32.292±0.334 km; 33.1±3.3 km; 33.678±0.334 km; 34.04 km (calculated); 36±4 km
Synodic rotation period	8.230±0.004 h; 8.24991±0.00005 h; 8.250±0.001 h; 8.2506±0.0003 h; 8.255±0.002 h
Geometric albedo	0.07±0.01; 0.08±0.02; 0.130±0.020; 0.1406±0.0213; 0.198±0.028
Spectral type	C
Absolute magnitude (H)	10.20 · 10.50±0.22 · 10.70 · 10.8

Lilofee (minor planet designation: 1003 Lilofee), provisional designation 1923 OK, is a carbonaceous Themistian asteroid from the outer regions of the asteroid belt, approximately 33 kilometers in diameter. It was discovered on 13 September 1923, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after the Black Forest mermaid "Lilofee" from German folklore.

Orbit and classification

Lilofee is a member of the Themis family (602), a very large family of carbonaceous, low-inclination asteroids, named after 24 Themis.^: 23 It orbits the Sun in the outer main-belt at a distance of 2.6–3.6 AU once every 5 years and 7 months (2,032 days). Its orbit has an eccentricity of 0.16 and an inclination of 2° with respect to the ecliptic.

The asteroid was first identified as A915 HB at Bergedorf Observatory in April 1915. The body's observation arc begins with its official discovery observation at Heidelberg.

Physical characteristics

Lilofee is an assumed carbonaceous C-type asteroid, which corresponds to the overall spectral type of the Themis family.^: 23

Lightcurves

Since 2004, several rotational lightcurves of Lilofee were obtained from photometric observations by astronomers René Roy, Enric Forné and Robert Stephens. Lightcurve analysis gave a rotation period of 8.255 hours with a brightness variation of 0.57 magnitude (U=2+/3/3).

In 2013, an international study modeled a lightcurve with a concurring period of 8.24991 hours and found a spin axis of (n.a., −99.0°) in ecliptic coordinates (λ, β).

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Lilofee measures between 27.29 and 36 kilometers in diameter and its surface has an albedo between 0.07 and 0.198.

The Collaborative Asteroid Lightcurve Link adopts an albedo of 0.08 and calculates a diameter of 34.04 kilometers based on an absolute magnitude of 10.7.

Naming

This minor planet was named after the legendary mermaid/neck Lilofee, who lived in the small Mummelsee of the Black Forest in southwest Germany. Lilofee is also the title figure in the German folk-song The beautiful young Lilofee ("Die schöne junge Lilofee") by August Schnezler (1809–1853).

The asteroid was named by the discoverer (RI 402). The name was proposed by ARI-astronomer Johannes Riem, after whom 1025 Riema was named. The official naming citation was also mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 96).

Notes

1 2 Lightcurve plot of (1003) Lilofee by R. D. Stephens (2013) at CS3. Rotation period 8.250±0.001 hours with a brightness amplitude of 0.54±0.02 mag. Summary figures at Collaborative Asteroid Lightcurve Link

References

1 2 3 4 "JPL Small-Body Database Browser: 1003 Lilofee (1923 OK)" (2017-07-04 last obs.). Jet Propulsion Laboratory. Retrieved 13 September 2017.
1 2 3 4 Schmadel, Lutz D. (2007). "(1003) Lilofee". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 87. doi:10.1007/978-3-540-29925-7_1004. ISBN 978-3-540-00238-3.
1 2 3 4 5 6 7 8 "MinorPlanet.info: One Asteroid Information". Asteroid Lightcurve Database (LCDB). Search using Number = "1003"
1 2 "Small Bodies Data Ferret". Nesvorny HCM Asteroid Families V3.0. Retrieved 13 September 2017.
1 2 3 4 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
1 2 3 4 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
1 2 3 4 Alí-Lagoa, V.; Licandro, J.; Gil-Hutton, R.; Cañ; ada-Assandri, M.; Delbo', M.; et al. (June 2016). "Differences between the Pallas collisional family and similarly sized B-type asteroids". Astronomy and Astrophysics. 591: 11. Bibcode:2016A&A...591A..14A. doi:10.1051/0004-6361/201527660. hdl:11336/63614.
1 2 3 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 13 September 2017.
1 2 3 4 Alí-Lagoa, V.; de León, J.; Licandro, J.; Delbó, M.; Campins, H.; Pinilla-Alonso, N.; et al. (June 2013). "Physical properties of B-type asteroids from WISE data". Astronomy and Astrophysics. 554: 16. arXiv:1303.5487. Bibcode:2013A&A...554A..71A. doi:10.1051/0004-6361/201220680. Retrieved 13 September 2017.
1 2 3 4 Behrend, Raoul. "Asteroids and comets rotation curves – (1003) Lilofee". Geneva Observatory. Archived from the original on 3 December 2002. Retrieved 13 September 2017.
1 2 Hanus, J.; Broz, M.; Durech, J.; Warner, B. D.; Brinsfield, J.; Durkee, R.; et al. (November 2013). "An anisotropic distribution of spin vectors in asteroid families". Astronomy and Astrophysics. 559: 19. arXiv:1309.4296. Bibcode:2013A&A...559A.134H. doi:10.1051/0004-6361/201321993. Retrieved 13 September 2017.
1 2 Stephens, Robert D. (April 2014). "Asteroids Observed from CS3: 2013 October–December". The Minor Planet Bulletin. 41 (2): 92–95. Bibcode:2014MPBu...41...92S. ISSN 1052-8091. Retrieved 13 September 2017.
↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 13 September 2017.
1 2 "1003 Lilofee (1923 OK)". Minor Planet Center. Retrieved 13 September 2017.
1 2 Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.

External links

Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR Archived 29 July 2016 at the Wayback Machine – Observatoire de Genève, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
1003 Lilofee at Wolfram Alpha. Retrieved 12 August 2012.
3D orbit for minor planet 1003 Lilofee at The Centaur Research Project. Retrieved 12 August 2012.
1003 Lilofee at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
1003 Lilofee at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

[lightcurve-plot-Stephens-13] 1 2 Lightcurve plot of (1003) Lilofee by R. D. Stephens (2013) at CS3. Rotation period 8.250±0.001 hours with a brightness amplitude of 0.54±0.02 mag. Summary figures at Collaborative Asteroid Lightcurve Link

[jpldata-1] 1 2 3 4 "JPL Small-Body Database Browser: 1003 Lilofee (1923 OK)" (2017-07-04 last obs.). Jet Propulsion Laboratory. Retrieved 13 September 2017.

[springer-2] 1 2 3 4 Schmadel, Lutz D. (2007). "(1003) Lilofee". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 87. doi:10.1007/978-3-540-29925-7_1004. ISBN 978-3-540-00238-3.

[lcdb-3] 1 2 3 4 5 6 7 8 "MinorPlanet.info: One Asteroid Information". Asteroid Lightcurve Database (LCDB). Search using Number = "1003"

[Ferret-4] 1 2 "Small Bodies Data Ferret". Nesvorny HCM Asteroid Families V3.0. Retrieved 13 September 2017.

[AKARI-5] 1 2 3 4 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)

[WISE-6] 1 2 3 4 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.

[Ali-Lagoa-2016-7] 1 2 3 4 Alí-Lagoa, V.; Licandro, J.; Gil-Hutton, R.; Cañ; ada-Assandri, M.; Delbo', M.; et al. (June 2016). "Differences between the Pallas collisional family and similarly sized B-type asteroids". Astronomy and Astrophysics. 591: 11. Bibcode:2016A&A...591A..14A. doi:10.1051/0004-6361/201527660. hdl:11336/63614.

[Masiero-2014-8] 1 2 3 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 13 September 2017.

[Ali-Lagoa-2013-9] 1 2 3 4 Alí-Lagoa, V.; de León, J.; Licandro, J.; Delbó, M.; Campins, H.; Pinilla-Alonso, N.; et al. (June 2013). "Physical properties of B-type asteroids from WISE data". Astronomy and Astrophysics. 554: 16. arXiv:1303.5487. Bibcode:2013A&A...554A..71A. doi:10.1051/0004-6361/201220680. Retrieved 13 September 2017.

[geneva-obs-10] 1 2 3 4 Behrend, Raoul. "Asteroids and comets rotation curves – (1003) Lilofee". Geneva Observatory. Archived from the original on 3 December 2002. Retrieved 13 September 2017.

[Hanus-2013c-11] 1 2 Hanus, J.; Broz, M.; Durech, J.; Warner, B. D.; Brinsfield, J.; Durkee, R.; et al. (November 2013). "An anisotropic distribution of spin vectors in asteroid families". Astronomy and Astrophysics. 559: 19. arXiv:1309.4296. Bibcode:2013A&A...559A.134H. doi:10.1051/0004-6361/201321993. Retrieved 13 September 2017.

[Stephens-2014d-12] 1 2 Stephens, Robert D. (April 2014). "Asteroids Observed from CS3: 2013 October–December". The Minor Planet Bulletin. 41 (2): 92–95. Bibcode:2014MPBu...41...92S. ISSN 1052-8091. Retrieved 13 September 2017.

[Veres-2015-14] Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 13 September 2017.

[MPC-object-15] 1 2 "1003 Lilofee (1923 OK)". Minor Planet Center. Retrieved 13 September 2017.

[Nesvorny-2014-16] 1 2 Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.